Projection screen and projection screen system

ABSTRACT

A projection screen and a projection screen system for an acoustic room. A projection screen includes a flexible screen material mounted within a system of retainers. The screen material is tautly retained within the a system of retainer members, and may be treated so that its airflow resistance is variable. Acoustical material is disposed on the wall behind the screen. Acoustical paneling is chosen according to the acoustical characteristics of the room, so that acoustical modal pressure peaks and nulls forming primarily along the length of the room can be reduced. The projection screen can be surrounded by further acoustical material, so that the entire wall can be used to tune the room. The acoustical material surrounding the projection screen is mounted within a second retainer system in which covering fabric is retained.

[0001] This application is related to commonly owned U.S. patentapplication Ser. No. 08/969,132, now U.S. Pat. No. 5,923,002, thecomplete contents of which are herein incorporated by reference. Thisapplication is also related to commonly owned U.S. Patent Applicationhaving Ser. No. 09/429,602, filed Oct. 28, 1999, entitled “FabricRetainer for Acoustic Structure and Methods of Installation,” thecomplete contents of which are herein incorporated by reference.

TECHNICAL FIELD AND INDUSTRIAL APPLICABILITY OF THE INVENTION

[0002] The present invention relates generally to a projection screensystem for a room. More particularly, a projection screen system isdisclosed which provides for the adjustment of room acoustics.

BACKGROUND OF THE INVENTION

[0003] Acoustical treatment of enclosed spaces has long been recognizedas desirable. It is generally known that a room or the like may beacoustically treated, or “tuned,” by selectively placing patterns ofacoustical material on the interior walls. Tuning enhances or otherwisecontrols the sound quality within the room, such as the sound quality ofa home theatre system.

[0004] Arrangements of acoustical treatment generally include segmentsof acoustical material mounted on the walls, ceilings, or other surfacesof a room. The acoustical material may, for example, selectivelydiffuse, reflect, or absorb sound. After the acoustical material ismounted on the wall, it is covered by a fabric. The fabric may beselected to enhance the aesthetic appeal of the room, such as bycovering the acoustical material with fabrics of differing patterns andcolors. In addition, the fabric keeps dirt and dust from collecting inthe acoustical material.

[0005] Controlling room acoustics is desirable where sound quality isimportant, such as in a movie theater. A conventional theater includes aprojection screen spaced from a wall, with insulation attached to aboard clipped to the wall behind the projection screen. Batt insulationhas been mounted behind a projection screen in this manner. Theinsulation is mounted on the wall in order to reduce the buildup ofsound energy in the theater.

[0006] Another conventional projection screen system has a screen whichis snap-stretched within a frame. The periphery of the screen includesgrommets which engage hooks or snaps on the frame, thereby supportingthe screen on the frame. Canvas is a conventional material for thescreen. The acoustical absorption of the screen is altered byperforating the screen. However, perforated screens are undesirablebecause they have reduced light reflectivity, and a corresponding poorervideo image quality. In addition, the conventional projection screensystem requires a rigid frame and is relatively expensive.

[0007] U.S. Pat. No. 2,187,904 to Hurley shows a projection screen witha sound-transmitting screen area. Hurley's screen includes alight-reflecting area 12 surrounded by a light-absorbent mask 14. Thelight-absorbent mask 14 has perforations which allow for thetransmission of sound from behind the screen. The perforations do notprovide tunability for the room. Further, the inclusion of theperforated light-absorbent mask 14 around the perimeter of thelight-reflecting part 12 increases the size of the screen.

[0008] U.S. Pat. No. 2,710,335 to Wong shows a light diffusing and soundabsorbent unit. Wong discloses a panel 21 which may be used to eitherreflect or absorb sound, and which selectively absorbs light.

[0009] The conventional projection arrangements do not disclose aprojection screen which can be used to acoustically tune a room

[0010] U.S. Pat. No. 5,923,002 to McGrath et al. discloses acousticalmaterial in the form of paneling, and methods of installing thepaneling. The acoustical paneling is mounted on wall surfaces to changeroom acoustics, and is covered by fabric material 100. The fabricmaterial 100 is held within fabric retainers 96, as shown in FIG. 10 ofMcGrath et al.

[0011] A projection screen system has not been integrated into a systemof acoustic treatment.

[0012] Therefore, a projection screen system having tunability, whichcan be integrated into an acoustical treatment for a wall, is desirable.

SUMMARY OF THE INVENTION

[0013] The projection screen and projection screen system disclosed inthis application overcome the above disadvantages and provide furtheradvantages not contemplated by conventional devices. The presentinvention is therefore directed, in part, to a projection screen whichis supportable at its edges within a system of retainer members. Theseretainer members are also suitable for supporting fabric for coveringacoustical material disposed on a wall. The projection screen of thepresent invention can therefore be incorporated into a projection screensystem which covers an entire wall, or a part of a wall.

[0014] The invention, in part, also provides a projection screen havingscreen material supported by a system of retainer members, into whichthe peripheral edges of the screen material are tucked. Acousticalmaterial can be placed behind the projection screen in order to renderthe area covered by the screen tunable. The screen is flexible and istautly mounted in the system of retainer members. Optionally the screenmay be elastic in order to facilitate a smooth appearance once thescreen is installed.

[0015] In addition to placing acoustical material behind the screenmaterial to alter the acoustic characteristics of the room, the screenmaterial itself can have variable acoustic properties. The screenmaterial and the acoustical material are then selected to work inunison, so that specific frequency bands of sound are absorbed by eachmaterial.

[0016] All or a part of the remainder of the wall may be treated byacoustical material disposed outside the perimeter of the system ofretainer members for the projection screen. This acoustical material isbordered by a second system of retainer members. The second system ofretainer members supports the outermost edges of covering fabric whichcovers the acoustical material mounted on the wall around the projectionscreen. The interior edges of the covering fabric are tucked into thesystem of retainer members which supports the exterior edges of thescreen material.

[0017] In this manner, all or a part of a wall including a projectingscreen can be treated with acoustical material, forming a projectionscreen system for the wall. The entire wall can therefore be madetunable by the selection of specific acoustical materials for theprojection screen and for the surrounding wall treatment, and by theselection of the screen material. The projection screen and thesurrounding wall treatment present a flush surface, and form a smooth,integrated, projection screen system.

[0018] Further scope of applicability of the present invention willbecome apparent from the detailed description given hereinafter.However, it should be understood that the detailed description andspecific examples, while indicating preferred embodiments of theinvention, are given by way of illustration only, since various changesand modifications within the spirit and scope of the invention willbecome apparent to those skilled in the art from this detaileddescription.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will become more fully understood from thedetailed description given hereinbelow and the accompanying drawingswhich are given by way of illustration only, and thus are not limitativeof the present invention, and wherein:

[0020]FIG. 1 is a front view of a projection screen system according tothe present invention;

[0021]FIG. 2 is a sectional view taken in the plane of line II-II inFIG. 1;

[0022]FIG. 3 is an enlarged view of the comer of the first retainersystem;

[0023]FIG. 4 is a perspective view of a retainer according to thepresent invention;

[0024]FIG. 5 is a cross-sectional view of an alternative retaineraccording to the present invention;

[0025]FIG. 6 is a cross-sectional view of another retainer according tothe present invention;

[0026]FIG. 7 is a partial perspective view of acoustical panelingaccording to the present invention;

[0027]FIG. 8 is a partial perspective view of another type of acousticalpaneling according to the present invention; and

[0028]FIG. 9 is a partial perspective view of yet another type ofacoustical paneling according to the present invention.

DETAILED DESCRIPTION AND PREFERRED EMBODIMENTS OF THE INVENTION

[0029]FIG. 1 is a front view of an embodiment of a projection screensystem according to the present invention. Projection screen system 10includes a projection screen 12 including a first retainer system 14,which serves as a frame for the projection screen 12. The remainder ofthe wall is covered by wall treatment 16, which renders the entire walltunable. In FIG. 1, the first retainer system 14 is not visible due tothe presence of screen material 24 and covering fabric 26. When edges ofthe screen material 24 and the covering fabric 26 have both beeninstalled in the first retainer system 14, the perimeter of theprojection screen 12 is visible only as a hairline joint 15.

[0030] As shown in FIG. 1, the wall treatment 16 is disposed around theperimeter of the projection screen 12. The covering fabric 26 of thewall treatment 16 is supported at its outer edges by a second retainersystem 18. The first retainer system 14 and the second retainer system18 are comprised of elongated retainer members having retainingportions, which will be discussed with reference to FIGS. 2 and 4-6.

[0031]FIG. 2 is a sectional view taken in the plane of line II-II inFIG. 1. Reference numeral 22 indicates a cross-section of a retainermember constituting a part of the first retainer system 14. The retainermember 22 supports exterior edges of the screen material 24, andinterior edges of the covering fabric 26, within a retaining portion 30.A retainer groove 32 allows access to the interior of the retainer 22,through which the respective edges of the screen material 24 and thecovering fabric 26 are tucked into a pocket 33 located near the base ofthe retainer member 22.

[0032] Acoustical material is disposed on either side of the retainermember 22 and secured to a wall 28. In FIG. 2, the acoustical materialis shown as acoustical paneling 34 located behind the screen material24, and acoustical paneling 38 located behind the covering fabric 26. Itis to be understood that any acoustical material suitable foracoustically treating a wall is appropriate for use in the projectionscreen 12 and in the wall treatment 16.

[0033] The projection screen 12 includes the acoustical paneling 34, thescreen material 24, and the first retainer system 14, which is formed bya series of retainer members 22. The acoustical paneling 34 may be asingle paneling element, or may include multiple paneling elements. Inorder to enhance the optical reflectivity of the projection screen 12,an optically reflective mat 36 is laminated onto a surface of theacoustical paneling 34. The reflective mat 36 is preferably made from aglass of a highly reflective color, such as white. The acousticalpaneling 38 of the wall treatment 16 may also include a reflective mat36, but it is not required. It is preferable to use paneling of neutralcolor behind covering fabric 26, to prevent any coloring from showingthrough the covering fabric 26, which is known as “telegraphing” ofcolor. Acoustical paneling 34 and 38 may be reversible in order toobtain differing acoustic tuning properties.

[0034] As can be seen with reference to FIGS. 1 and 2, the projectionscreen 12 integrated with wall treatment 16 allows an entire wallsurface to be acoustically treated with a smooth, continuous projectionscreen system 10. The airflow resistance of acoustical paneling 34 and38 can be varied in order to reduce acoustic modal pressure peaks andnulls forming along the wall 28. The airflow resistance of theacoustical paneling is varied by selecting panels of varying depth,layer types, and composition. Airflow resistance is varied dependingupon the frequencies to be addressed. Preferred acoustical paneling willbe discussed with reference to FIGS. 7-9 of this application.

[0035] In addition to varying the airflow resistance of acousticalpaneling 34 and 38, the acoustical properties of the screen material 24can also be varied. The screen material 24 should be made of a flexiblematerial which can withstand the installation process into the firstretainer system 14. Examples of such materials include polyester fibermaterial, elastic membranes, composite woven materials, rubbers, vinyls,and mixtures of synthetic rubbers. Other suitable materials may be heatshrinking polymer films which may be installed and then exposed to aheat source to shrink the screen to form a taut surface. The screenmaterial 24 must either be optically reflective, or must have a surfacewhich is treatable such that it can be rendered optically reflective.Examples of treatments for the surface of screen material 24 include acoating of small reflective glass beads, or reflective paint, or acombination thereof.

[0036] The treatment which affects the reflectivity of the screenmaterial 24 may also affect the acoustic absorption characteristics ofthe screen material 24. For example, applying different thicknesses andtypes of reflective paint to the surface of the screen material 24 canalter the airflow resistance of the screen material 24. As the airflowis restricted, the screen material 24 becomes more of a low frequencydiaphragmatic absorber. The airflow resistance of the screen material 24can also be adjusted without regard to the optical reflectivityproperties of the screen material 24. For example, variable strips ofairflow restrictive coatings could be applied to the screen material 24.Any coating applied to the screen material 24 must be compatible withthe flexibility of the screen material 24 during installation, and mustnot crack or flake off of the screen material 24. The airflow resistanceof the screen material may not only be altered, but it may be completelyrestricted, whereby the screen becomes a diaphragmatic absorber.

[0037] The acoustical paneling 34 and the screen material 24 areselected to act in unison in tuning the room. Specifically, the screenmaterial 24 can be chosen to absorb a narrow or a wide bandwidth offrequencies which may be determined as problematic within the room. Theacoustical paneling 34 is in turn selected which absorbs modal pressurepeaks within a specified bandwidth influenced by the screen material 24.

[0038] The wall treatment 16, which includes acoustical paneling 38 andcovering fabric 26, is similarly constructed. Covering fabric 26 may beacoustically transparent, may include a degree of acoustic absorptionprefabricated into the covering fabric 26, or may be acousticallytreated during installation. The acoustical paneling 38 can be varied indepth and cross-section. Preferred acoustical paneling will be discussedwith reference to FIGS. 7-9.

[0039] The following is a description of the assembly process for theprojection screen system 10. Acoustical paneling 34 and 38 is disposedin a pattern on wall 28. First and second retainer systems 14 and 18 arealso mounted in a desired pattern on the wall 28. A pattern of screenmaterial 24 approximating the size of the projection screen 12 is placedover the first retainer system 14. The edges of the screen material 24are then tucked into the first retainer system 14 in the retainingportions 30. This is known as the “preliminary tuck,” and any excessscreen material protruding from the retainer system is cut off. Next,excess screen material 24 is tucked into the retaining portions 30 offirst retainer system 14. This is known as the “final tuck,” duringwhich the screen is pulled taut. This can be done with a bladed toolresembling a spatula having a dull bladed edge.

[0040] The covering fabric 26 is similarly installed between the firstretainer system 14 and the second retainer system 18. If the retainer 22shown in FIG. 2 is used as the cross-section for the first retainersystem 14, the covering fabric and the screen material 24 must both betucked into a single retaining portion 30 of the retainer 22.

[0041] The screen material 24 may be treated with a coating of opticallyreflective material, with a coating of material affecting the airflowresistance of the screen material, or both.

[0042] It is preferable that the first retainer system 14 have arectangular shape with an essentially closed perimeter, so that thescreen material 24 is supported along most of its periphery. However,retainer members of the first retainer system 14 can be arranged in anypattern, such as a square, polygon, etc., which is suitable forsupporting screen material 24. Also, the first retainer system 14 neednot have an essentially closed perimeter, and gaps can be included inthe first retainer system 14. One example of a first retainer system 14having a partially open perimeter could include two opposed rows ofretainer members for supporting opposed edges of screen material 24.

[0043]FIG. 3 is an enlarged view of the area indicated by referencenumeral 20 in FIG. 1. FIG. 3 illustrates how two retainer members arejoined at a comer of the first retainer system 14. A first retainermember 44 and a second retainer member 46 are given 45° miter cuts atthe joint site. A small gap 48 can be left between the first and secondretainer members.

[0044]FIG. 4 is a perspective view of an alternative retainer memberaccording to the present invention. The retainer 400 is shown as anelongated member having a base wall 402. Base wall 402 has an exteriorsurface which may be attached to a support wall or structure. A firstwall 404 extends from the base wall 402, and an end portion 406 of thefirst wall 404 forms a part of a retaining portion 401 of the retainer400

[0045] An interior wall 416 extends from the base wall 402 andterminates in a forked end. One branch of the fork is a retaining arm410, which forms part of the retaining portion 401. Therefore, retainingportion 401 includes the end portion 406 of the first wall 404 and theopposed retaining arm 410. A retainer groove 412 is defined by the endportion 406 and the retaining arm 410. Once fabric or screen is insertedthrough the retainer groove 412, it is gathered and retained within thestorage pocket 414.

[0046] The end portion 406 and the retaining arm 410 are provided withopposed retaining surfaces 460 and 462, respectively. The retainingsurfaces 460, 462 can be formed by, for example, rows or sets of teeth.

[0047] Locking portion 418 forms the second branch of the forked end ofthe interior wall 416. The locking portion 418 extends from the forkedend of the interior wall 416, and includes a locking lip 422 whichextends from a side of the locking portion 418.

[0048] A second wall 424 extends from the base wall 402 and is spacedaway from the first wall 404. A chase 426 is defined between theinterior wall 416 and the second wall 424. The second wall 424terminates in the locking portion 428, which includes a locking lip 432extending from a side of the locking portion 428. The space betweenlocking portions 418 and 428 defines an opening to the chase 426 throughwhich wire, cabling, or any other communication, speaker, and/or powerlines can be placed in the chase 426. The interior of retainer 400includes a box rib 450 which extends laterally from the interior wall416 to the first wall 404, thus defining a box section 452.

[0049] In order to create a path between the exterior of the retainerand the chase 426, one or more ports 490 may be formed in the first wall404 and in the interior wall 416. The ports 490 may be formed as neededduring installation, or the retainer 400 may be manufactured so as toalready include one or more ports 490 in the first wall 404 and/or theinterior wall 416.

[0050] The primary access to the chase 426 is provided by its open sidelocated between the locking portions 418 and 428. To cover the open sideof the chase, the removable face cover 440 may be engaged with thelocking portions 418, 428. The removable face cover 440 is an elongatedgenerally flat element which can engaged with respective lockingportions 418, 428 to close the open side of the chase 426. Locking lips422 and 432 both preferably, but not necessarily, have chamferedsurfaces 429, 439.

[0051] The open side of the chase 426 also facilitates mounting of theretainer 400 onto a support surface, such as an underlying wall. Ascrew, a nail, or other fastener can be positioned through the openingof the chase 426 and driven through the base wall 402. A stapler mayalso be positioned through the opening of chase 426 so that the retainer400 can be stapled to a support surface. Alternatively, the retainer 400can be secured to a support surface by an adhesive, such as “LIQUIDNAILS” adhesive.

[0052]FIG. 5 is a cross-sectional view of an alternative retainerembodiment according to the present invention. The retainer 500 hastwo-way locking portions 521, 531. Two-way locking portions 521, 531allow for engagement with a face cover with locking projections whichextend into the chase 526. Decorative face cover 880 having lockingprojections 881 is shown engaged with two-way locking portions 521, 531.Retainer 500 also includes fastener locators 570.

[0053]FIG. 6 is a cross-sectional view of an alternative retainerembodiment according to the present invention. The retainer 600 has twoseparate retaining portions 601, each having a retainer groove 612.

[0054] The retainer embodiments disclosed in this application can madefrom, for example, molded or extruded (continuously molded) plastic. Onesuitable method of fabrication is extrusion of ABS or vinyl. Anothersuitable method is molding of ABS or vinyl. Any thermoplastic materialwhich can be formed in the required configurations is consideredappropriate for fabricating the embodiments in this application. Alsoappropriate are fiber-reinforced plastics (frp) or glass reinforcedplastics (grp). Fire resistant materials may also be used to protectwiring mounted within the chase in the event of fire. Also, theretainers may be manufactured in selected colors for aesthetic reasons.It is expressly stated here that these methods are not the only methodsby which the retainer assembly can be made, nor are the stated materialsthe only materials from which the retainer assembly can be made.

[0055] The relative heights and depths of the retainer embodimentsillustrated are intended as representative of desirable retainerdimensions. However, the manipulation of retainer dimensions isconsidered to be within the scope of this invention.

[0056]FIG. 7 is a partial perspective view of acoustical panelingaccording to the present invention. Paneling 70 has a first surface 72that is acoustically absorptive. The acoustically absorptive materialcan be any soft porous surface which absorbs sound energy. Paneling 70also includes a rigid backing board 76 and a fibrous material 78laminated thereto. The backing board 76 can be made from gypsum wallboard, which can be installed using commercially available adhesiveand/or mechanical fasteners.

[0057] A preferred acoustical paneling includes fibrous material 78having a density of at least 3 pounds per cubic foot. Exemplary board ofthis type is manufactured by Owens Coming as an acoustical board product(700 SERIES BOARD). Other suitable materials for the fibrous material 78include minimal and light duty fiberglass. A fiberglass mat 75 isoptionally laminated to the outer surface of the fibrous material 78.

[0058]FIG. 8 is a partial perspective view of another type of acousticalpaneling according to the present invention. Paneling 80 has a rigidbacking board 82 made from a commercially available open-cell melaminefoam. The glass mat 86 is laminated over the foam 84.

[0059]FIG. 9 is yet another type acoustical paneling according to thepresent invention. Paneling 90 has a rigid backing board 92 sandwichedbetween fibrous materials 94. A glass mat 96 is laminated onto thefibrous material 94. The rigid backing board 92 may advantageously beformed from any material which renders the paneling 90 diaphragmatic.

[0060] The acoustical paneling discussed with reference to FIGS. 7-9 areintended as exemplary of acoustical materials suitable for use in theprojection screen system 10 according to the present invention. However,a wide variety of acoustical paneling could be employed in thisinvention.

[0061] The invention being thus described, it will be obvious that thesame may be varied in many ways. Such variations are not to be regardedas a departure from the spirit and scope of the invention, and all suchmodifications as would be obvious to one skilled in the art are intendedto be included within the scope of the following claims.

What is claimed is:
 1. A projection screen system for attachment to awall, comprising: a projection screen including: a first retainersystem; and screen material supported by said retainer system, thescreen material being substantially reflective of incoming light; and awall treatment for covering a remaining portion of said wall andattached to said first retainer system.
 2. The projection screen systemof claim 1, wherein the first retainer system includes a plurality ofelongated retainer members arranged about a perimeter of the projectionscreen, each retainer member including a retaining portion and a storagecompartment.
 3. The projection screen system of claim 2, wherein theretaining portions of the retainer members include opposed retainingsurfaces, the opposed retaining surfaces grippingly securing a portionof the screen material within the storage compartments of said retainermembers.
 4. The projection screen system of claim 1, wherein the screenmaterial is made from a polyester fiber material.
 5. The projectionscreen system of claim 1, wherein the screen material is elastic.
 6. Theprojection screen system of claim 1, wherein the projection screenfurther includes: acoustical paneling for attachment to the wall betweenthe screen material and the wall.
 7. The projection screen system ofclaim 6, wherein the acoustical paneling includes an opticallyreflective mat layer.
 8. The projection screen system of claim 1,wherein the wall treatment includes: a second retainer system forattachment to the wall, exterior to a perimeter of the first retainersystem.
 9. The projection screen system of claim 8, wherein the walltreatment further includes: acoustical paneling for attachment to thewall; and covering fabric, the covering fabric being attached to thefirst retainer system, and also attached to the second retainer system,the covering fabric extending between the two retainer systems andcovering the acoustical paneling.
 10. A projection screen for attachmentto a wall, comprising: screen material which is substantially reflectiveof incoming light; a retainer system; and acoustical material, theacoustical material being disposable on one side of the screen material.11. The projection screen of claim 10, wherein the acoustical materialincludes at least one acoustical panel, the at least one acousticalpanel having a surface opposed to the screen material which issubstantially reflective of incoming light.
 12. The projection screen ofclaim 10, wherein the screen material is supported at its edges withinthe retainer system, the screen material being pulled taut andsubstantially flat.
 13. The projection screen of claim 12, wherein thescreen material is made from a polyester fiber material.
 14. Theprojection screen system of claim 12, wherein the screen material iselastic.
 15. The projection screen of claim 12, wherein the screenmaterial is coated with one of a reflective paint, and a layer of glassbeads.
 16. The projection screen of claim 11, wherein the retainersystem includes a plurality of elongated retainer members arranged abouta perimeter of the projection screen, each retainer member including aretaining portion and a storage compartment, the screen material beingsupported at its edges by the retaining portions of the retainermembers.
 17. The projection screen of claim 9, wherein said coveringfabric is acoustically transparent.
 18. A method of assembling aprojection screen system comprising: mounting a retainer system to awall; mounting acoustical material to the wall; and supporting screenmaterial in the retainer system, so that acoustical material is disposedbetween the screen material and the wall, the screen material beingsubstantially reflective of incoming light.
 19. The method of claim 18,wherein mounting a retainer system to a wall includes: providing a firstretainer system; and mounting the first retainer system to the wall, thefirst retainer system forming a perimeter for said screen; and whereinsupporting the screen material in the retainer system includes insertingedges of the screen material into the first retainer system.
 20. Themethod of claim 19, wherein mounting a retainer system to the wallfurther includes: providing a second retainer system; mounting thesecond retainer system to the wall, the second retainer system at leastpartly surrounding the first retainer system on the wall.
 21. The methodof claim 19, wherein providing a first retainer system includes:providing retainer members having a retaining portion and a storagecompartment, the retaining portion having opposed retaining surfaceswhich retain a portion of said screen material.
 22. The method of claim19, wherein mounting acoustical material to the wall includes mountingacoustic paneling to the wall inside the perimeter of the first retainersystem.
 23. The method of claim 20, wherein mounting acoustical materialto the wall includes mounting acoustic paneling to the wall between thefirst retainer system and the second retainer system.
 24. The method ofclaim 23, further comprising: supporting covering fabric between thefirst retainer system and the second retainer system, the coveringfabric having edges which are engaged with retainer grooves of the firstand second retainer systems.
 25. The method of claim 18, furthercomprising: applying a coating of material to the screen material, thecoating of material changing the airflow resistance of the screenmaterial.
 26. The method of claim 18, further comprising: applying acoating of material to the screen material, the coating of materialchanging the optical reflectivity of the screen material.
 27. Aprojection screen comprising: a retainer system for attachment to awall, the retainer system including: at least one elongated retainermember, the at least one retainer member having opposed elongatedretaining surfaces; and screen material supported by the retainersystem, the screen material being substantially reflective of incominglight, with edges of the screen material being held between the opposedelongated retaining surfaces of the at least one elongated retainermember.
 28. The projection screen of claim 27, wherein the at least oneelongated retainer member further includes: a base wall, the base wallhaving a surface for engagement with the wall; opposed elongatedretaining arms, the elongated retaining surfaces located on the opposedarms; and a storage compartment; wherein edges of the screen materialare held in tension between the opposed elongated retaining surfaces,and extend into the storage compartment.
 29. The projection screen ofclaim 28, wherein the screen material includes a reflective coating. 30.The projection screen of claim 27 wherein the screen material includes aheat shrink material.